Metals End of Unit Quiz

What is an element?

• A) A mixture of different types of atoms

• B) A pure substance that consists only of one type of atom

• C) A compound that consists of two or more elements

• D) A substance that cannot be found in the periodic table

Where are metals located in relation to the "stairs" in the periodic table?

• A) Metals are located above the stairs

• B) Metals are located below the stairs

• C) Metals are located to the right of the stairs

• D) Metals are not associated with the stairs in the periodic table

Which of the following properties is NOT a main property of metals?

• A) Conductor of heat

• B) Shiny

• C) Matte

• D) Malleable

Which group in the Periodic Table is known as the alkali metals?

• A) Group 1

• B) Group 2

• C) Group 3

• D) Group 7

Why are alkali metals stored under oil?

• A) To keep them warm

• B) To make them slippery

• C) To make them shine

• D) To reduce their reactivity with moisture in the air

Answer explanation

There are moisture particles in the air, our alkali metals react violently when they are exposed to water. So in order to store them we have to use oil to prevent the water in the air from coming into contact with the metal. Otherwise we could have a big problem!

What happens when an alkali metal reacts with water?

• A) It releases oxygen

• B) It releases hydrogen and forms a base

• C) It transforms into a noble gas

• D) It completely dissolves without any reaction

What is the indicator of hydrogen presence in the reaction of metal with acid?

• A) The solution turns blue

• B) When checked with a lighter, a 'pop' sound is heard

• C) The metal completely dissolves

• D) The acid changes color

Which metal is more reactive according to the given reactivity series?

• A) Calcium is more reactive than magnesium

• B) Magnesium is more reactive than calcium

• C) Zinc is more reactive than magnesium

• D) Magnesium is more reactive than zinc

Which of the following metals can be found in its pure form in nature?

• Potassium

• Sodium

• Gold

• Magnesium

How can copper be separated from copper oxide?

• Cooling it down

• Heating it with charcoal

• Using a magnet

• Dissolving it in water